I'm licensed in my state to carry concealed. I carry almost every day. I have only come across one individual that I think MIGHT have noticed, but said nothing. I don't care anyway, as it's none of their business. I make sure to follow the legal restrictions on carry (locations) to the letter. So, what do I have to fear ? If approached by a LEO, I will do just as the law requires. If that happens on the basis of some citizen making a report - so what ?
Probably will never happen, anyway. Most people are too wrapped up in their own lives - most of them wouldn't notice a nuclear weapon going off - let alone someone with a handgun "printing" a little bit, under their clothing.